could stump
Verbo regular: stump - stumped- stumped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could stump
you could stump
she could stump
we could stump
you could stump
they could stump 	I could be stumping
you could be stumping
she could be stumping
we could be stumping
you could be stumping
they could be stumping	I could have stumped
you could have stumped
she could have stumped
we could have stumped
you could have stumped
they could have stumped	I could have been stumping
you could have been stumping
she could have been stumping
we could have been stumping
you could have been stumping
they could have been stumping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not stump
you could not stump
she could not stump
we could not stump
you could not stump
they could not stump 	I could not be stumping
you could not be stumping
she could not be stumping
we could not be stumping
you could not be stumping
they could not be stumping	I could not have stumped
you could not have stumped
she could not have stumped
we could not have stumped
you could not have stumped
they could not have stumped	I could not have been stumping
you could not have been stumping
she could not have been stumping
we could not have been stumping
you could not have been stumping
they could not have been stumping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I stump?
could you stump?
could she stump?
could we stump?
could you stump?
could they stump? 	could I be stumping?
could you be stumping?
could she be stumping?
could we be stumping?
could you be stumping?
could they be stumping? 	could I have stumped?
could you have stumped?
could she have stumped?
could we have stumped?
could you have stumped?
could they have stumped? 	could I have been stumping?
could you have been stumping?
could she have been stumping?
could we have been stumping?
could you have been stumping?
could they have been stumping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not stump?
could you not stump?
could she not stump?
could we not stump?
could you not stump?
could they not stump? 	could I not be stumping?
could you not be stumping?
could she not be stumping?
could we not be stumping?
could you not be stumping?
could they not be stumping? 	could I not have stumped?
could you not have stumped?
could she not have stumped?
could we not have stumped?
could you not have stumped?
could they not have stumped? 	could I not have been stumping?
could you not have been stumping?
could she not have been stumping?
could we not have been stumping?
could you not have been stumping?
could they not have been stumping?